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Re: questionable display of an IDLgrPolygon Object with some transparency [message #42049]

Tue, 21 December 2004 06:50

Karsten Rodenacker
Messages: 98
Registered: July 1997

Member

On Tue, 21 Dec 2004 07:25:26 -0700, David Fanning <davidf@dfanning.com>
wrote:

> Karsten Rodenacker writes:
>
>> I have a bit surprising display of an IDLgrPolygon object with some
>> transparency using xobjview, which shows under certain directions some
>> rippling (Windows XP SP 2, IDL 6.1.1). A reduced screenshot is stored
>> under
>> http://ibb.gsf.de/homepage/karsten.rodenacker/Misc_WWW/Examp le.jpg.
>>
>> The same object I have saved into a VRML File. It does not show this
>> behaviour using the Cortona viewer, although transparency does not come
>> out. It can be found under
>> http://ibb.gsf.de/homepage/karsten.rodenacker/Misc_WWW/Examp le.wrl. Be
>> patient, it is about 10 MB long!
>>
>> If there is some experience in the group any hints are appreciated to
>> avoid this rippling.
>
> Have you tried this with both software AND hardware
> rendering turned on? Worth a try. Often one works when
> the other doesn't.

I had Hardware rendering, and tried Software but without difference in the
displayed result. In
http://ibb.gsf.de/homepage/karsten.rodenacker/Misc_WWW/Examp le1.jpg there
is a nice Jalousie effect. Unluckily my objects behind the Jalousie are
not so extraordinary...

--
Karsten Rodenacker
------------------------------------------------------------ -------- :-)
GSF - Forschungszentrum Institute of Biomathematics and Biometry
D-85758 Oberschleissheim Postfach 11 29
Karsten.Rodenacker@gsf.de | http://ibb.gsf.de/ | DEL _ for reply
http://ibb.gsf.de/homepage/karsten.rodenacker/
Tel: +49 89 31873401 | FAX: ..3369

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Re: questionable display of an IDLgrPolygon Object with some transparency [message #42050 is a reply to message #42049]

Tue, 21 December 2004 06:25

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Karsten Rodenacker writes:

> I have a bit surprising display of an IDLgrPolygon object with some
> transparency using xobjview, which shows under certain directions some
> rippling (Windows XP SP 2, IDL 6.1.1). A reduced screenshot is stored
> under http://ibb.gsf.de/homepage/karsten.rodenacker/Misc_WWW/Examp le.jpg.
>
> The same object I have saved into a VRML File. It does not show this
> behaviour using the Cortona viewer, although transparency does not come
> out. It can be found under
> http://ibb.gsf.de/homepage/karsten.rodenacker/Misc_WWW/Examp le.wrl. Be
> patient, it is about 10 MB long!
>
> If there is some experience in the group any hints are appreciated to
> avoid this rippling.

Have you tried this with both software AND hardware
rendering turned on? Worth a try. Often one works when
the other doesn't.

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/

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Re: questionable display of an IDLgrPolygon Object with some transparency [message #42148 is a reply to message #42049]

Tue, 21 December 2004 07:23

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Karsten Rodenacker writes:

> I had Hardware rendering, and tried Software but without difference in the
> displayed result. In
> http://ibb.gsf.de/homepage/karsten.rodenacker/Misc_WWW/Examp le1.jpg there
> is a nice Jalousie effect. Unluckily my objects behind the Jalousie are
> not so extraordinary...

Humm, well then, following my reading of Sherlock Holmes,
I would have to conclude this is how it is *suppose* to look!

Cheers,

David

P.S. I think what you are looking at is the "quantum foam"
I've been reading about in Brian Greene's latest books. If
you are still shopping for your physics friends, I highly
recommend both The Elegant Universe and The Fabric of the
Cosmos. They both confirm my suspicion that the world is
a mystery. :-)

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/

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